Tag: "gender" at biology news
MU researchers to study the status of black bears in Missouri
... use that DNA to estimate the number of bears, the gender
ratio of male to female bears, where the bears are migrating from and if they are reproducing. “This study is a good example of the use of cutting-edge molecular biology in the management of Missouri’s wildlife,” Eggert said. “We’re pleased to wo...
Male circumcision overstated as prevention tool against AIDS
...on female prostitutes who are viewed as victims of gender
and income inequality. Such organizations do not properly weigh the loss of human rights and life itself that this virus, unleashed on a community, is causing. This virus, itself, is a violation of human rights and we must do everything in our power ...
Hearts of male and female rainbow trout are different
...ed under hypoxic (oxygen shortage) conditions, but gender
was not specifically examined. Nor were comparison...t humans. A new research study begins to close the gender
gap in fishes, and finds that sex differences in cardiac performance and metabolism exist in rainbow...
Study finds surfing safer than soccer
...thanson. The authors note that although age and gender
had no bearing on the injury rate, wave size and bottom type, independently, were significantly associated with a great chance of injury. "It would come as little surprise to most surfers that the injury rate more than doubles when surfing in larg...
Newborn brains grow vision and movement regions first
...What's interesting about this is it shows that the gender
difference in brain size arises during prenatal brain development. It's present at birth. That gender
difference is set in stone very, very early in brain development," Gilmore said. However, the scan...
Smell may outlast other senses
... sensitive sense of smell than healthy men but the gender
effect was not apparent in smokers, people on medications or with a history of nasal problems. ...
Canadian study shows bilingualism has protective effect in delaying onset of dementia by four years
...immigration, formal education, employment and even gender
as influencers in the results. "There are no pharmacological interventions that are this dramatic," says Dr. Freedman, who is Head of the Division of Neurology, and Director of the Memory Clinic at Baycrest, referring to the four-year delay in onse...
Living with water scarcity -- world must act now
...g people cope with dry spells. Poverty, hunger, gender
inequality, and environmental degradation continue to afflict developing countries not because of technical failings but because of political and institutional failings. There is need for drastic reform in the water sector. Governments must lead th...
Syphilis rate on rise in US gay, bisexual men
...ent. While syphilis statistics do not identify the gender
of the sex partners of infected people, the study authors infer that a large number of those infected ?62 percent in 2003 ?are gay or bisexual, in part, because so few women become infected. The study does not look past 2003, but statistics sugge...
New test helps identify hepatitis C patients at high risk of developing cirrhosis
... cirrhosis. Doctors consider such factors as age, gender
and alcohol consumption to predict such risk, but because of individual variability, these factors don't yield a very accurate prediction. A liver biopsy can indicate the amount of damage to the liver up until the time of the biopsy, but can't rev...
With fruit fly sex, researchers find mind-body connection
...ult for scientists to categorize their behavior as gender
appropriate. So McKeown raised flies missing one of two copies of doublesex, a process that didn't completely remove the gene's influence but drastically reduced it. The result: Flies' sexual equipment was intact, but, theoretically, their sexual ...
Did 'ABCs' cause Uganda's fall in HIV rates?
...cal leadership, nationwide social mobilization and gender
empowerment policies, both women and men benefited and HIV prevalence declined." Countering Murphy and Greene's viewpoint, Alexandra Mihailovic (University of Toronto) and Peter Olupot-Olupot (Mbale Regional Referral Hospital, Uganda), argue that "b...
For Pacific white shrimp, gender matters when competing for food
...p consistently win over smaller shrimp of the same gender
when competing for food, male shrimp will almost a...the adult females of the same age. "Both size and gender
are important factors in acquiring food," says study author Dustin Moss, "but when you pit male agai...
More kidney cancer is detected and treated early, yet death rate rises
...cancer patients, including age at diagnosis, race, gender
and information about the tumor. During the years 1983-2002, researchers found, the overall incidence of kidney cancer rose from 7.1 to 10.8 cases per 100,000 people in the United States, an increase of 52 percent. The largest increase was among peop...
'Nymph of the sea' reveals remarkable brood
... care in the invertebrate fossil record, it allows gender
to be determined in an animal as old as the Silurian period of geological time, and indicates a remarkably conserved egg brooding reproductive strategy."...
Study suggests evolutionary link between diet, brain size in orangutans
...he females, they noted. As to what may cause the gender
difference, the researchers note that female morio are notably smaller than their male counterparts and that they generally are at greater risk for nutritional stress because of pregnancy and lactation and their smaller homes ranges. "The general s...
Gene transfer using mutant form of good cholesterol cuts vascular plaque and inflammation
...arries a y chromosome and female DNA does not, the gender
mismatch enabled the researchers to precisely track the donor bone marrow. To deliver the gene to the arterial wall, the researchers used a "signal molecule" when they put the genes into the bone marrow. The signal molecule selectively goes into im...
Evolutionary forces explain why women live longer than men
...ates sliced by socioeconomic status shows that the gender
gap is affected by social standing. Human males in lower socio-economic levels tend to have higher mortality rates than their higher-status peers. The impact of social standing is greater on male mortality than on female mortality, Kruger noted, part...
UCLA study finds same genes act differently in males and females
... the scientists found a direct correlation between gender
and the amount of gene expressed. "We saw strikin.... No one has previously demonstrated this genetic gender
gap at such high levels." UCLA is the first to uncover a gender
difference in gene expression in fa...
Today's babies are fatter babies
...the national 85th and 95th percentiles for age and gender
are classified as at risk for becoming overweight, and those with a weight-for-height index greater than the 95th percentile are classified as overweight. Access the CDC's growth charts at http://www.cdc.gov/growthcharts/ . "In addition to demonst...